In a recent facebook entry, Abbot Austin Murphy, OSB wrote:
Last Holy Thursday, I took part in the Joliet diocese's Young Adult Ministry's visits to the altars of repose in nearby parishes. During the event, I was talking with a young man who asked why there weren't more resources about Catholic teaching and apologetics, through things such as the internet. At the time, I was not able to give him off the top of my head too many specific sites to visit. But I thought of him and his comment when I saw this link today. I hope this helps!
In the article, Mark Shea recommends the resources below. (Note: Annotations are taken from the Mark Shea article)